Symantec 12.1 upgradation

Hello Guys,

We started to upgrade SEP 12.1.3001,but having a elow issue.

-          Policy version is 12.1.3001 for majority. While some are showing 0.0.0 or 5.0.0. What could be an issue here?

-          Randomly, below details are missing for entries:

-          For many clients, features like Tamper Protection On, Intrusion Prevention On, Early Launch Antimalware On, etc. are having status as Not Installed, Disabled, etc. What actions are planned to fix those statuses?